Bosh-plate.



J. SMITH.

BOSH PLATE.

APPLICATION FILED JAN. 24,1912.

Patented July 2, 1912.

Milli/11 711! TOR His Arm-undiv- CDLUMBIA PLANOCIRAPII co.. WASHINGTON.n. c.

"UNITED STATES PATENT OFFICE.

JAMES SMITH, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR ONE-HALF TO WILLIAMSMITH, 0F ALLEGHENY COUNTY, PENNSYLVANIA.

BOSE-PLATE.

Specification of Letters Patent.

Patented July 2, 1912.

Application filed January 24, 1912. Serial No. 673,050.

To all whom it may concern Be it known that I, JAMES SMrrI-I, a subjectof the King of Great Britain, and residing in the city of Pittsburgh, inthe county of Allegheny and State of Pennsylvania, have invented ordiscovered new and useful Improvements in Bosh-Plates, of which thefollowing is a specification.

My invention consists of a new and improved bosh-plate forblast-furnaces and the like.

My object is to provide a strong, durable and inexpensive plate,requiring a minimum of material and easily cast or otherwise formed.

My object is also to provide a bosh-plate having an interior free frombaffles, anchors, studs or other obstructions, permitting a free anduninterrupted circulation of the cooling medium and avoiding clogging.

My object is also to introduce the cold water into the nose of theplate, to cause it to circulate throughout the plate and toward the buttthereof as it becomes heated and to be discharged at the butt, and alsoto provide cross or lateral circulation at the butt.

To accomplish the ends in view, I provide my bosh-plate with a verticalwell or aperture in the center thereof, walled-in laterally to inclosethe interior of the plate, but preferably open at top and bottom. Thewalls of the well form a vertical bridge or support for the top andbottom walls of the plate, preventing buckling or collapse without theuse of interior supports, leaving the interior of the plate perfectlyfree for the water circulation. A cylindrical passage leads from theexterior of the plate through its butt-wall into said well, said passagebeing of an exterior diameter less than the height of the interior ofthe plate so that cross passages for the circulation of the Water areprovided above and below said cylindrical passage. A threaded hole isformed in the front or nose-wall of the well in alinement with saidcylindrical passage and preferably of somewhat less diameter than thebore of said passage. A water pipe extends from the exterior of thebosh-plate through said cylindrical passage, which it preferably fitsloosely, crosses said well and extends through said threaded hole to apoint adjacent to the nose-wall of the bosh plate. The inner portion ofsaidpipe is preferably threaded and engages the threaded hole, thussupporting and securing said pipe removably in position. One or moredischarge ports are provided in the butt wall of the bosh plate,preferably a port adj acent to each end of said wall. One of-said portsmay be closed, if desired by a plug and the water led from said boshplate through the one port only. A laterally convexed surface isprovided for the inner face of the nose-wall of the bosh-plate in frontof the nozzle of the pipe to receive the impact of the water and directits flow.

In the accompanying drawings, Figure 1 is a plan view of my bosh-plate,the interior construction of which isindicated by dotted lines; Fig. 2is a butt-end elevation of the plate, and Fig. 3 is a vertical sec tionof the plate along the line IIIIIIin Fig. 1.

The following of the drawings:

is a detailed description A is the bosh-plate, having a nose-wall 1, i abutt-wall 2, side-walls 3-3, top-wall 4: and

bottom-wall 5. The plate is preferably laterally arched, as shown inFig. 2. The plate is also preferably tapered toward the nosewall, asshown in Figs. 1 and 3 to facilitate its introduction into or withdrawalfrom the box which is built into the furnace-Wall for its reception. Inthe center of the plate A is formed a vertical well or aperture B,provided with end walls 6 and 7 and side walls 8 and 9, extending fromthe top-wall to the bottom wall of the plate A and inclosing theinterior of said plate. I

Leading through the butt-wall 2 and the interior of the plate Aintothewell B is an inclosed cylindrical passage 0 of less diameter thanthe verticalaxls of the plate so as to provide above and belowsaidpassage 'O a cross passage 10 for the lateral circula vided athreaded hole 11 in alinement with the passage 0 and preferably ofsomewhat less diameter than said passage.

D is a water inlet pipe extending from the butt exterior of the plate Athrough the passage C, which it preferably fits loosely, crossing thewell B and extending through the threaded hole 11 into the interior ofthe plate to a point adjacent to the nose wall 1 of said plate. Theforward end of said pipe D is threaded for engagement with the threadsof hole 11' whereby said pipe is re movably supported and secured inplace.

A laterally convexed boss, 12, is provided on the inner face ofnose-wall 1 in alinement with the nozzle of pipe D to receive the flowof water from said pipe and divert the same laterally in bothdirections.

In the butt-wall 2 of the bosh-plate I provide one or morewater-discharge ports 13, one of said ports being preferably locatedadjacent to each end of said butt-wall. Both of said ports may be used,or if desired, one of said ports may be closed, as by the threaded plug14. VVat-er connections are provided for the outer end of pipe D and forone or both of the discharge ports 13.

1515 are the handles or pierced ears which are cast or otherwise securedto the outer surface of the butt-wall 2 to facilitate the handling ofthe bosh-plate.

The water introduced through the pipe D impacts against the nose-wall 1or boss 12, dividing into two flows toward the side walls 3-3 of theplate. These currents of water traverse the interior of the bosh-plateand escape through the ports 1313, a crosscirculation being establishedthrough the passages 10-10 along the entire length of the butt-wall 2.In case one of the ports 13 is closed, the water from that side of thebosh-plate passes over to the openport 13 through the passages 10-10 andjoins the current on the other side of the plate in escaping from theinterior of said plate through the open port 13.

It is evident from the above that the Water currents circulate freelythroughout the entire interior of the bosh-plate, thoroughly chillingthe same, especially the nose portion thereof. There are no obstructionsin the interior of the plate to cause clogging or other trouble. Owingto the additional strength provided by the vertical walls of the wellB,the plate will withstand any interior pressure or exterior pressure towhich it may be subjected without danger of injury. Buckling is avoided,so that the plate may be disconnected and with drawn or introduced intoits wall-box without binding or sticking, thus saving time and labor. Aminimum of material, usually expensive bronze or other similar metal, isrequired and the plate may be cast or other- Wise formed withoutdifficulty as no interior anchors are required in that operation.

The well B may be of any desired size in relation to the bosh-plate, butI prefer the relative dimensions indicated on the drawin What I desireto claim is 1. A bosh-plate having an unobstructed interior and avertically walled aperture through the central portion thereof, the topand bottom walls of said plate being cutaway to form the ends of saidaperture,

means for introducing water across saidaperture into the nose of theplate, and means for the escape of water at the butt of the plate,substantially as described.

2. A bosh-plate having an unobstructed interior and a vertically walled,aperture through the central port-ion thereof, the top and bottom wallsof said plate being cutaway to form the ends of said aperture, awater-inlet pipe extending through the butt of said plate, across saidaperture and discharging into the nose of the plate, and means for theescape of water at the butt of the plate, substantially as described.

3. A bosh-plate having an unobstructed interior and a vertically walledaperture through the central portion thereof, the top and bottom wallsof said plate being cutaway to form the ends of said aperture, acylindrical passage extending from the butt of the plate through theinterior thereof into said aperture, an opening into the nose of saidplate through the opposite wall of said aperture, a water-inlet pipe ofless diameter than said passage extending through the same and snuglyfitting said opening and adapted to discharge water into the nose ofsaid plate, and means for the escape of water at the butt of the plate.

4;. A bosh-plate having an unobstructed interior and a vertically walledaperture through the central portion thereof the top and bottom walls ofsaid plate being cutaway to form the ends of said aperture, acylindrical passage extending from the butt of the plate through theinterior thereof into said aperture, a transverse water passage beingprovided adjacent to said cylindrical passage, an opening into the noseof said plate through the opposite wall of said aperture, a water inletpipe of less diameter than said cylindrical passage extending throughthe same and snugly fitting said opening and adapted to dis charge waterinto the nose of said plate, and means for the escape of water at thebutt of the plate.

5. A bosh-plate having an unobstructed interior and a vertically walledaperture through the central portion thereof, the top and bottom wallsof said plate being cutaway to form the ends of said aperture, a

1,os1,sss a Water-inlet pipe extending through the butt means for theescape of the water at the butt of said plate, across said aperture anddisofthe plate. 10 charging Water against the nose-Wall of said Signedat Pittsburgh, Pennsylvania this plate, a spreader-boss on saidnose-Wall 20th day of January 1912.

against which said Water is injected and JAMES SMITH. whereby said Wateris divided into two Witnesses: streams passing in either direction alongE. A. LAWRENCE,

' the interior face of said nose-Wall, and J. H. HARRISON.

v Copies of this patent may be obtained for five cents each, byaddressing the Commissioner of .Patents,

Washington, D. G.

